Description The toUpperCase() method converts a string to uppercase letters. The toUpperCase() method does not change the original string.

Jul 10, 2025 · The toUpperCase() method returns the value of the string converted to uppercase. This method does not affect the value of the string itself since JavaScript strings are immutable.

You'll learn how to use the JavaScript toUpperCase () method to return a string with all the characters converted to uppercase.

Jan 16, 2026 · The toUpperCase () method is used to convert all letters in a string to uppercase. It helps standardize text for comparison or display. Converts all lowercase letters to uppercase. Special …

Sep 15, 2022 · In this tutorial, you’ll learn how to transform the character case of a string — to uppercase, lowercase, and title case — using native JavaScript methods.

In this tutorial, we will learn about the JavaScript String toUpper () method with the help of examples. In this article, you will learn about the toUpperCase () method of String with the help of examples.

Aug 30, 2024 · Capitalizing strings is a common task in JavaScript programming. Whether you need to format names, standardize inputs, match style guides, or output cleaned-up data, knowing how to …

Sep 24, 2025 · The toUpperCase() method converts all alphabetic characters in the string to their uppercase equivalents and returns a new string without modifying the original.

Feb 6, 2025 · A comprehensive guide to the JavaScript String toUpperCase () method, covering its syntax, usage, and practical examples for converting strings to uppercase.

The JavaScript String toUpperCase () method converts all the characters in a string to uppercase letters. It does not change the original string, but returns a new string. If the original string is already in …